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#include "config.h"
.globl _objc_msg_lookup
.globl _objc_msg_lookup_stret
.globl _objc_msg_lookup_super
.globl _objc_msg_lookup_super_stret
.intel_syntax
/* Work around assembler bugs. */
.macro jmp
.att_syntax
/* Use uppercase instruction to avoid recursion. */
JMP $0
.intel_syntax noprefix
.endmacro
.macro jz
.att_syntax
/* Use uppercase instruction to avoid recursion. */
JZ $0
.intel_syntax noprefix
.endmacro
test rdi, rdi
testq %rdi, %rdi
jz LreturnNilMethod
test dil, 1
testb $$1, %dil
jnz LtaggedPointer_$0
mov r8, [rdi]
mov r8, [r8 + 64]
movq (%rdi), %r8
movq 64(%r8), %r8
Lmain_$0:
mov rax, [rsi]
movzx ecx, ah
movzx edx, al
movq (%rsi), %rax
movzbl %ah, %ecx
movzbl %al, %edx
#ifdef OF_SELUID24
shr eax, 16
shrl $$16, %eax
mov r8, [r8 + 8 * rax]
movq (%r8,%rax,8), %r8
#endif
movq r8, [r8 + 8 * rcx]
movq rax, [r8 + 8 * rdx]
movq (%r8,%rcx,8), %r8
movq (%r8,%rdx,8), %rax
test rax, rax
testq %rax, %rax
jz $1
ret
LtaggedPointer_$0:
mov rax, [rip + _objc_taggedPointerSecret@GOTPCREL]
xor rdi, [rax]
andb dil, 0xE
movzx r8d, dil
movq _objc_taggedPointerSecret@GOTPCREL(%rip), %rax
xorq (%rax), %rdi
andb $$0xE, %dil
movzbl %dil, %r8d
mov rax, [rip + _objc_taggedPointerClasses@GOTPCREL]
mov r8, [rax + 4 * r8]
mov r8, [r8 + 64]
movq _objc_taggedPointerClasses@GOTPCREL(%rip), %rax
movq (%rax,%r8,4), %r8
movq 64(%r8), %r8
jmp Lmain_$0
.endmacro
.macro GENERATE_LOOKUP_SUPER
$0:
mov r8, rdi
mov rdi, [rdi]
test rdi, rdi
movq %rdi, %r8
movq (%rdi), %rdi
testq %rdi, %rdi
jz LreturnNilMethod
movq r8, [r8 + 8]
movq r8, [r8 + 64]
movq 8(%r8), %r8
movq 64(%r8), %r8
jmp Lmain_$1
.endmacro
GENERATE_LOOKUP _objc_msg_lookup, _objc_methodNotFound
GENERATE_LOOKUP _objc_msg_lookup_stret, _objc_methodNotFound_stret
GENERATE_LOOKUP_SUPER _objc_msg_lookup_super, _objc_msg_lookup
GENERATE_LOOKUP_SUPER _objc_msg_lookup_super_stret, _objc_msg_lookup_stret
LreturnNilMethod:
lea rax, [rip + LnilMethod]
leaq LnilMethod(%rip), %rax
ret
LnilMethod:
xor rax, rax
xorq %rax, %rax
ret
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